Care UK Professor Bryan Lask, who works alongside the Child and Family Practice in London specialising in eating disorders, told ITV News: "It's appalling. Lady Gaga is obviously not a good role model - what message does it give to those prone to eating disorders?"

Instagram have contacted Lady Gaga over "concerns" about her well-being after members of its online community raised concerns over posts the singers has shared recently.

The singer tweeted a screenshot of the email she received along with the message "omg at this email INSTAGRAM just sent me".

Lady Gaga tweeted a screenshot from the email she received from Instagram Credit: Twitter/Lady Gaga

The email said: "Members of the Instagram community have raised concerns for your well-being after seeing posts you've shared. We're reaching out to provide you with some important safety information."

In recent days, the singer has posted handwritten notes to Instagram including "Each day I cry, I feel so low from living high", which are thought to be lyrics from a song on her forthcoming album.

Gaga does not appear to have taken the correspondence seriously, tweeting: "What the actual hell. hahahah."

A former roommate and friend Lady Gaga will take her to court over claims she was cheated out of overtime wages.

A US jury will decide whether Gaga's demands on Jennifer O'Neill left her any personal time, or whether she was on call 24 hours a day, seven days a week as she claims in her lawsuit against the pop sensation.

Lady Gaga is estimated to have earned $80 million in the first six months of 2013. Credit: Reuters

O'Neill worked for the singer in early 2009 and again from 2010 to 2011. US District Judge Paul Gardephe said both sides she agree she was expected to be available throughout each hour of the day, which potentially qualifies her for overtime compensation.

O'Neill said she was paid about $50,000 annually when she was first hired and $75,000 annually the second time by the pop singer, who is estimated in a list published by Forbes magazine to have earned $80 million in the first six months of this year.